package threadDemo;

public class Demo6 {
    private static int count = 0;

    public static void main(String[] args) throws InterruptedException {
        Object lock = new Object();
        Thread t1 = new Thread(() -> {
            for (int i = 0; i < 50000; i++) {
                synchronized (lock) {
                    synchronized (lock) {
                        count++;
                    }
                }
            }
            System.out.println("循环结束");
        });
        t1.start();
        t1.join();
        System.out.println(count);
    }
}
